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      Comparative psychometric analyses of the SCL-90-R and its short versions in patients with affective disorders

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          Abstract

          Background

          Despite the widespread application of Symptom Checklist 90-R (SCL-90-R), its psychometric weaknesses have repeatedly been noted. This study aimed to comparatively assess the psychometric properties of the SCL-90-R scales and the scales of its short versions Brief Symptom Inventory (BSI), Symptom Checklist-27 (SCL-27), Brief Symptom Inventory-18 (BSI-18), Symptom Checklist-14 (SCL-14), and Symptom Checklist short version-9 (SCL-K-9) in patients with affective disorders.

          Methods

          The data of 2,727 patients within the main treatment group of affective disorders were assessed according to the DSM-IV. Patients completed the SCL-90-R and Beck Depression Inventory (BDI).

          Results

          There were no significant differences regarding the internal consistency of the SCL-90-R scales and the scales of the short versions. The dimensional structure was only supported for the short versions BSI-18, SCL-14 and SCL-K-9. The assessment of convergent validity revealed high correlations. With regard to the discriminant validity, there were medium correlations. With regard to the sensitivity of change, no significant differences between the scales were found.

          Conclusions

          In summary, the scales of the short versions show mostly satisfactory psychometric properties in comparison to the scales of the SCL-90-R. The results support the application of the short versions as screening instruments, especially the BSI-18, and more economic variants of the SCL-90-R covering a wide range of psychopathological symptoms.

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          Most cited references8

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          Prevalence, comorbidity, disability and service utilisation. Overview of the Australian National Mental Health Survey.

          Health planning should be based on data about prevalence, disability and services used. To determine the prevalence of ICD-10 disorders and associated comorbidity, disability and service utilisation. We surveyed a national probability sample of Australian households using the Composite International Diagnostic Interview and other measures. The sample size was 10 641 adults, response rate 78%. Close to 23% reported at least one disorder in the past 12 months and 14% a current disorder. Comorbidity was associated with disability and service use. Only 35% of people with a mental disorder in the 12 months prior to the survey had consulted for a mental problem during that year, and most had seen a general practitioner. Only half of those who were disabled or had multiple comorbidity had consulted and of those who had not, more than half said they did not need treatment. The high rate of not consulting among those with disability and comorbidity is an important public health problem. As Australia has a universal health insurance scheme, the barriers to effective care must be patient knowledge and physician competence.
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            Cross-validation of the SCL-27: a short psychometric screening instrument for chronic pain patients.

            We constructed a short multidimensional screening instrument for chronic pain patients based on the items contained in the Symptom Check List-90-Revised (SCL-90-R). The proposed dimensional structure of the SCL-90-R was recently shown to be irreproducible in chronic pain patients. As a consequence, the use of the Global Severity Index (GSI) was recommended, although it did not capture all information contained in the many items of the SCL-90-R. Based on an exploratory factor analysis, a six-dimensional structure using 27 items from the SCL-90-R was explored utilizing the data of 2780 chronic pain patients. A short form was prospectively tested on 581 patients in the same setting. Criteria for item selection were high convergent and low discriminant correlations. The assessment of the dimensions was kept short, but a minimum of four items were retained. A questionnaire yielding the dimensions (I) depressive symptoms, (II) dysthymic symptoms, (III) vegetative symptoms, (IV) agoraphobic symptoms, (V) symptoms of social phobia, and (VI) symptoms of mistrust was obtained. Additionally, the GSI of the SCL-90-R could be estimated precisely (r =0.96). The SCL-27 can be used for screening psychopathology in chronic pain patients. The scoring algorithm of the SCL-27 can be used for the 90-item form as well. Copyright 2001 European Federation of Chapters of the International Association for the study of pain.
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              Symptom-Checkliste SCL-90-R:

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                Author and article information

                Journal
                BMC Psychiatry
                BMC Psychiatry
                BMC Psychiatry
                BioMed Central
                1471-244X
                2013
                28 March 2013
                : 13
                : 104
                Affiliations
                [1 ]Center of Psychiatric Care Rickling, Rickling, D - 24635, Germany
                [2 ]Psychosomatic Clinic, Bad Bramstedt, Bad Bramstedt, D-24576, Germany
                [3 ]Department of Medical Psychology, University Medical Centre Hamburg-Eppendorf, D-20246 Hamburg, Germany
                [4 ]Center for Clinical Psychology and Rehabilitation, University of Bremen, Bremen, D-28359, Germany
                [5 ]Institute of Psychology, University of Klagenfurt, A-9020 Klagenfurt, Austria
                Article
                1471-244X-13-104
                10.1186/1471-244X-13-104
                3626675
                23537095
                500d0074-ca23-4186-ba76-7d4b08254380
                Copyright ©2013 Prinz et al.; licensee BioMed Central Ltd.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 27 July 2012
                : 16 March 2013
                Categories
                Research Article

                Clinical Psychology & Psychiatry
                affective disorder,psychometric,scl-90-r,short versions,symptom severity

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